LT-22185: XHTML: Fix style when there are multiple ws (#454)

GenerateCssFromWsOptions() was only generating rules for one
writing system. Changed this to generate rules for all enabled
writing systems.

Author: mark-sil

Src/xWorks/CssGenerator.cs

@@ -689,6 +689,7 @@ private static StyleRule AdjustRuleIfParagraphNumberScheme(StyleRule rule, Confi
 		private static List<StyleRule> GenerateCssFromWsOptions(ConfigurableDictionaryNode configNode, DictionaryNodeWritingSystemOptions wsOptions,
 													string baseSelection, ReadOnlyPropertyTable propertyTable)
 		{
+			var rules = new List<StyleRule>();
 			var cache = propertyTable.GetValue<LcmCache>("cache");
 			foreach(var ws in wsOptions.Options.Where(opt => opt.IsEnabled))
 			{
@@ -700,10 +701,10 @@ private static List<StyleRule> GenerateCssFromWsOptions(ConfigurableDictionaryNo
 				if (!string.IsNullOrEmpty(configNode.Style))
 					wsRule.Declarations.Properties.AddRange(GenerateCssStyleFromLcmStyleSheet(configNode.Style, wsId, propertyTable));
 				if (!IsEmptyRule(wsRule))
-					return new List<StyleRule> {wsRule};
+					rules.Add(wsRule);
 			}
 
-			return new List<StyleRule>();
+			return rules;
 		}
 
 		private static List<StyleRule> GenerateCssForWritingSystemPrefix(ConfigurableDictionaryNode configNode, string baseSelection, ReadOnlyPropertyTable propertyTable)